From Longman Dictionary of Contemporary Englishimpeccableim‧pec‧ca‧ble /ɪmˈpekəbəl/ adjective PERFECTwithout any faults and impossible to criticize SYN perfect She has taught her children impeccable manners. a bar with impeccable service —impeccably adverb impeccably dressed
Examples from the Corpus
impeccable• The chain of logic is impeccable.• On paper, her qualifications seemed to be impeccable.• First, the logic is impeccable.• The author, as ever, exhibits impeccable control over her story.• In any Open Door disagreement, the employee is assumed to be right unless the manager has impeccable documentation to the contrary.• She arranged them on the big table on the terrace where they looked impeccable, like clothes set out for a wedding.• Valda and Varvara adore officers, their impeccable manners, their formal bearing, their white uniforms.• Macdonald was an aristocratic character with impeccable manners.• It played these roles thanks to impeccable photographic skills, including montage and front-projection.• Audrey has impeccable taste in clothes.• The expression of impeccable taste in your table presentation.• As I expected, her house was decorated with impeccable taste.impeccable manners• His parents were keen on the work ethic and equipped him with impeccable manners.• Richard was tall for his age and personable, with impeccable manners and a strong sense of occasion.• He had impeccable manners that somehow always reminded you of an older, bygone age.• Valda and Varvara adore officers, their impeccable manners, their formal bearing, their white uniforms.Origin impeccable (1500-1600) Latin impeccabilis, from peccare “to do bad things” 